Universal joint.



No. 658,065. Patented Sept. [8, I900. J.'JETTER.

UNIVERSAL JOINT.

(Application filed May 18, 1900.)

No Model.)

Jig].

m5 NORRIS Perms co. PHoYo-umo, WASHINGTON, o. e.

* UNITED STATES PATENT OFFICE- .iuuus JE'ITER, on HARTFORD, CONNECTICUT,ASSIGNOR To FRANK BOOORSELSKI, or SAME PLACE.

UNIVERSAL JOINT.

SPECIFICATION forming part of Letters PatentNo. 658,065, datedse'p'cembeme, 1900. Application filed May 16, 1900. Serial No, 16,876.(No model.)

T0 at whom it may concern: Be it known that I, 'JULIUS ETTER, a Citizenof the United States ofAmerica, and a resident of Hartford, county ofHartford, and

ticularly to the construction of the pivots and the block and the meanswhereby these pivots act as ties, thereby preventing the forked membersof the coupling-heads of the universal joints. from spreading, andthereby maintaining the axial alinement of the cooperating parts. i

The object of my invention is to provide a universal joint capable oftransmitting a greater amount of power at a greater angle and at agreater speed than has heretofore been accomplished.

The novelty of the construction and the organization of the severalparts are illustrated in the drawings forming a part of thisspecification, wherein Figure l is an outside view of my improveduniversal joint, the same being drawn at an angle of thirty degrees,which is about the largest angle at which a universal joint can beoperated to advantage. Fig. 2 represents a section on the longitudinalmedian line, showing the bolt in full view. Fig. 3 is a cross-sectionalend view on the line 3 3and shown in the direction of the arrows of Fig.

2. Figs. 4, 5, and 6 respectively represent outside views of the boltsand the bushing. Figs. 7 and 8 are respectively a front and end view ofthe block, showing the bushings in their proper positions as used in myuniversal joint.

Similar numerals indicate like parts in all of the drawings.

In the preferred embodiment of my invention herein shown and describedthe universal joint comprises two coupling-heads which may be of anysuitable construction adapted to receive the ends of the shafts and eachprovided with forked members, between which is suitably held the block,the inner surfaces of the members forming suitable bearing-surling-heads10 and 11, provided with holes 10 and 11, respectively, adapted toreceive the ends of the shafts, by means of which the motion and powerare transmitted, and also provided with the forked members 10 10 and 1111, respectively. The forked members are provided with holes 10 and 11which are counterbored with'enlarged recesses 1O and ll respectively,and are in substantial axial alinement with one another. The block 12,which is preferably square in cross-section, is interposed between thetwo forked members of the head and is so fitted thatthe surfaces 12 and12 move freely with the least possible frictional resistance against theinner surfaces of the forked members 10 and 10 and 11 and 11,respectively. The block 12 is also provided with two circular openings12 and 12' of exact size and in precisely the same plane, but at ninetydegrees with one another, as clearly shown in Figs. 2, 3, 7, and 8. Thisblock is adapted to receive on two adjacent sides the bushings 13 and14, which form the pivotal connection with-one member of each of thecoupling-heads, and they are rigidly driven into the openings 12 and 12respectively, to a certain depth, the balance of the openings beingfilled by the bolts 15 and 16, aswill be explained later. The diameters14c and lat of the bushing 14 are slightly smaller than the hole 10 andthe counterbored recess 10 of the forked mem- 5 her 10, and thediameters l3 and 13 of the bushing 13 are also slightly smaller than thehole 11 and the counterbored recess 11 of the forked member 11. Inpractice I prefer to make the difference of the respective holes abovereferred to and bushing about onethousandth of an inch, so as to be sureof the.

least amount of friction between these bushings and the forked members.The pivotal connection of each of the other forked members of thecoupling-heads will now be described, and consists of the bolts 15 and16, and these bolts also serve the purpose of holding the forked members10 10 and 11 11 together. The bolt 15 passes through the forked member10 the block 12, and the bushing 14, and the head of that bolt 15 isslightly smaller than the counterbored recess 10, and the body of thesame, 15, is also slightly smaller than the hole 10 of the forked member10 but the body 15 of that bolt fits tightly and is held rigidly in thecircular opening 12 of the block 12. The shouldered stem 15 of the bolt15 passes through the central hole of the bushing 14 and, as shown inthe drawings, which represent thepreferred embodiment of my invention,isriveted over upon the bushing 14. The bolt 15 is also provided with ahole 15 the purpose of which will be described later.

To prevent the forked members ll and 11 from spreading, I have providedthe bolt 16, the diameter of the head 16 and the diameter of the body 16being slightly less than that of the counterbored recess 11 and the hole11 respectively, of the forked member 11"; but the body 16 fits rigidlyinto the circular opening 12 of the block 12. The stem 16 of the bolt 16fits into the hole 15, as previously described, and also fits tightlyinto the bushing 13 and, as shown, is riveted over at the end.

I have preferably shown the bolts 15 and 16 as being riveted over topresent a smooth outside appearance; but I do not wish to limit thescope of my invention to this mode of securing the ends thereof, asa nutthreaded to the ends of the stems 15 and 16 would answer equally well,or other methods can be used as well.

In assembling the universal joint proper care should be taken that theheads of the bolts .15 and 16 sit properly down on the bottom of therecess 10 and 11, respectively.

I do not desire broadly to claim a universal joint consisting of twocylindrical shaftsections of uniform diameter from end to end and eachhaving an integral fork at the inner end thereof, the outer faces of theprongs of which are disposed in a common are co incident with thecircumferential arc of the body portion of said section, two concentricmembers, one of which extends through the other and is connected at itsends to the prongs of one fork, and a cylindrical member extendingthrough the concentric members and having its ends connected to theprongs of the other fork, as I am aware that this is the invention ofFrank E. Bocorselski and constitutes the subjectmatter of one claim ofan application for Letters Patent filed by him June 18, 1900, Serial No.20,703. Neither do I desire to claim the specific subjects-matter of theother claims in his applimembers, a block interposed between the forkedmembers of the coupling-heads, two bushings rigidly supported inopenings at two adjacent sides of the block, the axes of the bushingsintersecting at right angles with one another, bolts passing through theforked members, block and bushing, substantially as described.

2. In a universal joint, the combination of the coupling-heads,eachprovided with forked members, a block interposed between the forkedmembers of the coupling-heads, two bushings rigidly supported inopenings at two adjacent sides of the block, the axes of the bushingsintersectingat right angles with one another, bolts passing through theforked members, block and bushing, and having their ends riveted overupon the bushing, substantially as described.

3. A universal joint consisting of the combination of thecoupling-heads, having forked members integral with the coupling-heads,a block interposed and fitting substantially as described between theforked members, bushings rigidly supported in the block, the bolt 15provided with the opening, the bolt 16 passing through the opening ofthe bolt 15, and means for securing the ends of the bolts for thepurpose specified.

4. A universal joint consisting of the combination of thecoupling-heads, having forked members integral with the coupling-heads,a block interposed and fitting substantially as described between theforked members, bushings rigidly supported in the block, and haw ingtheir axes intersecting at ninety degrees with one another, boltspassing through the openings of each one of the forked members of thecoupling-heads and the block,and forming pivotal connections, thebushingforming the pivotal connection between the other forked members and theblock, all combined and operating substantially as described.

5. A universal joint consisting of the combination of the coupling-heads, having forked IO connection between the other forke bers ofthe coupling heads, the axes of the bolts coincidin g with the axes ofthe bushings; and the ends of the bolts riveted over to prevent theforks from spreading, substantially as described and for the purpose setforth.

Signed by me at Hartford, Connecticut,- this 14th day of May, 1900.

JULIUS JETTER;

Witnesses:

ED. E. OLAUssEN, J. S. ELLSWORTH.

